JP6421457B2 - Emission guidelines - Google Patents

Description

  The present invention relates to a light emission indicator mounted on a vehicle meter provided in various vehicles.

  Conventionally, as this kind of light emission guideline, for example, the one described in Patent Document 1 below is known. The light emission pointer described in Patent Document 1 is a light-transmitting pointer main body having a rotation center region and an instruction section for indicating a measurement value display section provided on a display board, and illumination so that the pointer main body emits light. A pedestal member having a light guide portion for guiding light to the pointer body and a non-translucent pedestal portion located around the light guide portion; and a guide member provided in the center of rotation of the pointer body and the pedestal member. The non-light-transmitting cover member that covers the light portion and the pedestal portion is provided with a slit that exposes the front surface of the rotation center region of the front surface of the pointer main body.

JP 2002-250642 A

By the way, in the light emission pointer described in Patent Document 1 described above, the light guide portion of the pedestal member and the rotation center region of the pointer main body are located directly above the light source that emits illumination light, and the rotation center of the pointer main body is located on the cover member. In a configuration in which a slit that exposes the front surface of the region is provided, the rotation center region of the pointer body tends to emit light brighter than other portions of the pointer body excluding the rotation center region (for example, the indicator). Therefore, there is a problem that unevenness of light emission of the pointer main body occurs.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a light emission pointer capable of suppressing light emission unevenness of a pointer main body in order to cope with the above-described problems.

The present invention provides a translucent pointer main body having a rotation center region and an instruction unit that indicates a measurement value display unit, and a first light emission that emits illumination light in the direction of the instruction unit so that the instruction unit emits light. A pedestal member having a light guide portion that forms a surface and a second light exit surface that emits illumination light in the direction of the distal end so that the distal end portion of the pointer body emits light, and the rotation center region In the light emitting pointer in which the non-translucent cover member that covers at least the light guide portion is provided with a slit that exposes at least the front surface of the rotation center region of the front surface of the pointer main body, the pedestal member includes The amount of illumination light introduced into the rotation center region is adjusted by shielding at least a part of the gap between the two light exit surfaces so that the illumination balance between the rotation center region and the instruction unit is maintained. A light intensity adjustment unit And wherein the are.

The present invention also provides a translucent pointer main body having a rotation center region and an instruction unit for indicating a measurement value display unit, and a first light emission for emitting illumination light in the direction of the instruction unit so that the instruction unit emits light. A pedestal member having a light guide portion that forms a surface and a second light exit surface that emits illumination light to the end portion so that the end portion of the pointer main body emits light, and the rotation center region and the In the light emitting pointer, the non-translucent cover member that covers at least the light guide portion is provided with a slit that exposes at least the front surface of the rotation center region of the front surface of the pointer body. A bulging portion corresponding to the shape of the light guide portion is provided, and the bulging portion has at least two light exit surfaces so as to maintain an illumination balance between the rotation center region and the pointing portion . Blocks part of the light that illuminates directly above the gap A light amount adjustment unit that adjusts the amount of illumination light introduced into the rotation center region by illuminating is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the light emission pointer which can achieve an initial objective and can suppress the light emission nonuniformity of a pointer main body can be provided.

The perspective view which shows each part which comprises the light emission pointer by embodiment of this invention. Sectional drawing of the light emission pointer by the same embodiment. The front view of the base member by the embodiment. The rear view of the pointer main body by the modification of the embodiment. The side view of the pointer main body by the modification of the embodiment.

  Hereinafter, an embodiment in which the present invention is applied to a light emission indicator mounted on a vehicle meter will be described with reference to FIGS.

  1 and 2, the light emission pointer according to the present embodiment closes a translucent pointer main body 10, a cover member 20 that covers the front and sides of the pointer main body 10, and a rear side opening of the cover member 20. The pedestal member 30 and the balancer 40 for maintaining the balance during rotation of the light emitting pointer are mounted on a rotary shaft 51 provided in a pointer driving means 50 including a movable magnet type instrument or a stepping motor. In conjunction with the rotating shaft 51, the display plate is rotated around an axis (not shown).

  The pointer main body 10 is formed of a translucent synthetic resin material, and is substantially orthogonal to a base 11 having a rotation center region R and a terminal portion described later, and a rotation center axis RA that is coaxial with the axis of the rotation shaft 51. An instruction unit 12 extending in a longitudinal direction is provided, and the instruction unit 12 instructs a measurement value display unit (not shown) such as a scale provided on the display board.

  In this case, the base portion 11 is formed with a notch portion 13 corresponding to a light guide portion, which will be described later, provided in the pedestal member 30, and the first light incident portion 14 and the first light receiving portion 14 are formed on the inner surface of the notch portion 13. 2 light incident portions 15 are formed.

  The first light incident portion 14 is a standing wall surface provided along the rotation center axis RA, and is located at a boundary portion between the base portion 11 and the instruction portion 12. The second light incident portion 15 is a flat surface provided along the longitudinal direction of the instruction portion 12, and is located on the back surface of the base portion 11.

  Further, in the rotation center region R, a bulging portion 16 corresponding to the shape of the light guide portion is provided. The bulging portion 16 includes a substantially circular flange portion extending to the side of the second light incident portion 15 corresponding to the rotation center region R, and includes two positioning pins corresponding to the positioning pins described later provided on the base member 30. It has a hole 17.

  It should be noted that a hot stamp layer such as white is provided on at least one of the front surface of the pointer main body 10 (the base portion 11 and the instruction portion 12) and the rear surface of the instruction portion 12 and the light incident portions 14 and 15. (Not shown) may be formed.

  The cover member 20 is formed of a non-translucent (for example, black) synthetic resin material, and includes a base portion 11, an instruction portion 12, and required portions of the pedestal member 30 (here, the light guide portion and a shielding member described later). The bottom part of the peripheral wall part 22 which consists of a covering member and has the front wall part 21 which covers the front of the pointer main body 10, and the surrounding wall part 22 which covers the side of the pointer main body 10, and becomes the opposite side to the front wall part 21 The side is open.

  The front wall portion 21 provided in the cover member 20 is provided with a slit 21 a for exposing the front surface of the pointer main body 10 (the front surface of the base portion 11 and the front surface of the instruction portion 12), and the inner wall surface of the peripheral wall portion 22. A pair of locking claws 22a fitted to the pedestal portion is provided.

  The pedestal member 30 is provided integrally with the translucent member 60 by two-color molding using a translucent member 60 formed of a translucent resin material and a non-translucent (for example, black) synthetic resin. And a shielding member 70.

  The translucent member 60 has a substantially T-shaped cross section, and is disposed immediately below the base 11 in the pointer main body 10. The translucent member 60 includes a boss portion 61 having a through-hole portion 61a to which the rotation shaft 51 is attached (connected), and a guide extending from the front side of the boss portion 61 in a substantially disc shape with the rotation center axis RA as a center. The light body 62 is provided.

  The light guide 62 has a function of guiding illumination light from a light source (not shown) to the pointer main body 10 so that the pointer main body 10 emits light. In addition, the light guide unit 62 includes a light receiving unit 63 provided on the bottom of the light guide 62 so as to receive illumination light from the light source, and between the light receiving unit 63 and the second light incident unit 15. A substantially fan-shaped front light guide unit 64 and a rear light guide unit 65 are provided.

  The front-side light guide portion 64 and the rear-side light guide portion 65 have line-symmetric shapes around a virtual center line Y that passes through the through-hole portion 61a and extends in a direction orthogonal to the longitudinal direction of the indication portion 12. The surface portion of the light guide portion 62 located between the front light guide portion 64 and the rear light guide portion 65 is formed as a flat plate surface portion 66.

  Further, in this case, the front light guide section 64 is located on the side closer to the instruction section 12 (the front end side than the rotation center axis R), and the rear light guide section 65 is positioned relatively far from the instruction section 12 ( It is located on the rear end side of the rotation axis R).

  The front light guide unit 64 includes a first reflection surface 64a having an inclined surface shape for reflecting and guiding the illumination light introduced into the light guide 62 through the light receiving unit 63 toward the instruction unit 12, and the first reflection surface 64a. A first light exit surface 64b formed of a standing wall surface that radiates illumination light (hereinafter referred to as first illumination light) reflected in the longitudinal direction of the indicator 12 through one reflection surface 64a is formed.

  The first light exit surface 64b corresponds to (faces to) the first light incident portion 14 of the pointer body 10, and supplies the first illumination light to the instruction portion 12 through the first light exit surface 64b. The indicator 12 region located on the tip side of the notch 13 is illuminated.

  The rear side light guide unit 65 has a base portion located on the opposite side of the instruction unit 12 with the illumination light illumination light introduced into the light guide 62 through the light receiving unit 63 sandwiching the bulging part 16 (rotation center region R). 11 and the second and third reflecting surfaces 65a and 65b having an inclined surface shape for reflecting and guiding the light to the end portion 18 and the second and third reflecting surfaces 65a and 65b. A second light exit surface 65c that radiates the illuminated illumination light (hereinafter referred to as second illumination light) to the outside is formed.

  The second reflecting surface 65a is used to reflect and guide the illumination light introduced into the light guide 62 through the light receiving unit 63 toward the third reflecting surface 65b. The third reflecting surface 65b is provided in the optical path of the second illumination light extending from the second reflecting surface 65a to the second light exiting surface 65c, and faces the second reflecting surface 65a. The second illumination light reflected by the reflective surface 65a is reflected and guided toward the second light exit surface 65c.

  The second light exit surface 65c corresponds to (faces to) the end portion 18 of the base portion 11, supplies the second illumination light to the end portion 18 through the second light exit surface 65c, and mainly the end portion 18 of the base portion 11. Is supposed to illuminate.

  The shielding member 70 is formed of a closing member formed of a black synthetic resin material disposed in the bottom side opening so as to close the bottom side opening of the peripheral wall portion 22, and is an elongated thin plate-like shape that holds the indication unit 12. A holding portion 71, a (non-translucent) pedestal portion 72 located around the light guide portion 62 (periphery of the back side), and a receiving portion 73 for fixing and holding the balancer 40 are provided. The balancer 40 is disposed (embedded) in a space formed between the first reflecting surface 65b and the third reflecting surface 65b.

  The holding unit 71 is configured to cover the instruction unit 12 from behind, and a light leakage prevention member that prevents the first illumination light reflected in the longitudinal direction of the instruction unit 12 from leaking to the rear side of the instruction unit 12. As a function.

  The pedestal portion 72 has a substantially annular shape so as to surround the light guide portion 62, and the pedestal portion 72 (provided in the pedestal member 30) has a hole provided in the pointer main body 10 as shown in FIG. 3. A pair of positioning pins 74 provided so as to correspond to the portion 17 and a light amount adjusting portion 75 provided on the plate surface portion 66 of the light guide portion 62 along the virtual center line Y are provided. The positioning of the pointer main body 10 and the pedestal member 30 is performed by inserting the positioning pins 74 into the main body.

  The light amount adjustment unit 75 is formed of a black synthetic resin material, and is provided integrally with the pedestal unit 72 so as to be along a direction substantially orthogonal to the longitudinal direction of the instruction unit 12 (that is, the virtual center line Y). It consists of a light shielding part. Specifically, the light amount adjusting portion 75 here is formed at two locations between the through-hole portion 61a and the pair of positioning pins 74 so as to avoid the through-hole portion 61, and the shape thereof is both the through-hole portion 61a. As it goes from the side toward the positioning pin 74 side, it has a divergent shape.

  In the light amount adjusting unit 75, a part of the illumination light supplied into the light guiding unit 62 through the light receiving unit 63 directly passes through the first light incident unit 15 corresponding to the bulging unit 16 (that is, the rotation center region R). This serves to prevent illumination, so that the rotation center region R does not become excessively brighter than the other regions (the indicating portion 12 and the end portion 18) of the pointer body 10 excluding the rotation center region R. It has become.

  In other words, this means that the light amount adjusting unit 75 illuminates light (hereinafter referred to as a third light source) introduced into the rotation center region R so that the illumination balance among the instruction unit 12, the rotation center region R, and the end portion 18 is maintained. This means that the amount of light (referred to as illumination light) is adjusted. As a result, the rotation center region R located immediately above the second light incident portion 15 corresponding to the bulging portion 16 does not become too brighter than the indication portion 12 and the end portion 18, and the pointer body The illumination balance of 10 full lengths is kept uniform, and light emission unevenness of the pointer main body 10 can be suppressed.

  In the case of this example, the light source is composed of white LEDs respectively disposed immediately below the two light amount adjustment units 75, and the front surface of the pointer body 10 exposed from the slit 21a emits white light when the light sources emit light. .

  Next, an example of assembling the light emission pointer in this embodiment will be described. First, the cover member 20 in which the top and bottom are inverted (that is, the cover member 20 in which the slit 21a is located on the lower end side) and the pointer main body 10 that is similarly vertically inverted (that is, the indication unit). 12 and the pointer main body 10 with the back surface positioned on the upper side, and the pointer main body 10 (the indicating portion 12, the rotation center region R, the end portion 18) is covered with the cover member so that the front surface of the pointer main body 10 faces the slit 21a. Set within 20.

  Subsequently, a pedestal member 30 (the pedestal member 30 with the boss portion 61 positioned on the upper side) in which the balancer 40 is attached to the space and is vertically inverted is prepared. The pedestal member 30 and the pointer main body 10 accommodated in the cover member 20 are aligned so that the holding portion 71 and the instruction portion 12 and the positioning pin 74 and the hole portion 17 face each other.

  Finally, the pedestal member 30 is pressed against the pointer main body 10 so as to close the bottom side opening of the peripheral wall portion 22. Then, the positioning pin 74 of the shielding member 70 is fitted into the hole portion 17 of the pointer main body 10, and the outer peripheral portion of the pedestal portion 72 is connected to the pair of locking claws 22 a provided on the inner wall surface of the second cover portion 22. As a result, the assembling of the light emitting pointer composed of the pointer main body 10, the cover member 20, the base member 30, and the balancer 40 is completed.

  As described above, in the present embodiment, the transparent pointer main body 10 having the rotation center region R and the instruction unit 12 for indicating the measurement value display unit, and the illumination light is indicated so that the pointer main body 10 emits light. A non-translucent cover member 20 that includes a pedestal member 30 having a light guide portion 62 for guiding to the main body 10 and covers the light guide portion 62 and the shielding member 70 provided in the pointer main body 10 and the pedestal member 30. In the light emitting pointer provided with the slit 21a that exposes the front surface of the pointer main body 10, the pedestal portion 72 (the pedestal member 30) maintains the illumination balance among the indication portion 12, the rotation center region R, and the end portion 18. As described above, a light amount adjustment unit 75 that adjusts the amount of illumination light (third illumination light) introduced into the rotation center region R is provided.

  Accordingly, in the light amount adjusting unit 75, a part of the illumination light supplied into the light guide unit 62 through the light receiving unit 63 has 15 second light incident units corresponding to the bulging unit 16 (that is, the rotation center region R). Since the rotation center region R located immediately above the second light incident portion 15 corresponding to the bulging portion 16 is not directly illuminated by the other parts of the pointer body 10 excluding the rotation center region R. Therefore, the illumination balance of the entire pointer main body 10 is kept uniform, and uneven emission of the pointer main body 10 can be suppressed.

  Further, in this embodiment, the pedestal member 70 includes a non-translucent pedestal portion 72 positioned around the light guide portion 62, and the light amount adjustment portion 75 includes a light shielding portion integrally provided on the pedestal portion 72. Thus, when the light shielding member 70 is integrally formed with the light transmissive member 60 by the two-color molding, the light amount adjusting portion 75 of the light shielding member 70 is formed on the plate surface portion 66 of the light transmissive member 60. The pedestal member 30 composed of the optical member 60 and the shielding member 70 can be manufactured at low cost, which is advantageous in terms of cost.

  Further, in the present embodiment, an example in which two light sources are arranged immediately below the light amount adjusting unit 75 has been described. For example, two light sources are arranged immediately below the first and second reflecting surfaces 64a and 65a, respectively. Even if it is a case, the effect similar to the said embodiment can be acquired.

  In the present embodiment, the example in which the light amount adjustment unit 75 is provided on the plate surface portion 66 of the light guide unit 62 has been described. However, the light amount adjustment unit 75 is a part of the illumination light supplied into the light guide unit 62. Any configuration can be adopted as long as the portion does not directly illuminate the rotation center region R. For example, the light amount adjustment portion 75 may be provided at the back portion of the light guide portion 62 corresponding to the plate surface portion 66. Alternatively, as a modification of the present embodiment, as shown in FIGS. 4 and 5, in order to adjust the amount of illumination light (third illumination light) introduced into the rotation center region R so that the illumination balance is maintained. Even when the light amount adjusting unit 80 is provided not on the light guide unit 62 side but on the bulging unit 16 side, the same effect as that of the above embodiment can be obtained.

  In the case of the modification shown in FIGS. 4 and 5, the light amount adjusting unit 80 is located at the back of the bulging portion 16 located between the pair of holes 17 when the pointer body 10 is viewed from the back side. It is formed along the virtual center line Y (in a substantially trapezoidal shape), and is projected so as to have a predetermined thickness on the back side of the bulging portion 16 when the pointer body 10 is viewed from the side. Yes. At this time, the light amount adjustment unit 80 formed of a black resin material is a cavity formed between the first reflection surface 64a, the second reflection surface 65a, the plate surface portion 66, and the second light incident portion 15. For example, the pointer main body 10 may be formed integrally with the pointer main body 10 by the above-described two-color molding, or may be formed as a separate member from the pointer main body 10 and fixed to the pointer main body 10 using an appropriate fixing means.

  In the present embodiment, the cover member 20 covers the pointer main body 10 (the base portion 11 and the instruction portion 12), the light guide portion 62, and the shielding member 70, but the peripheral wall that covers the instruction portion 12 as the cover member 20. The cover member which eliminated the part 22 part is employ | adopted, and the said cover member should just be comprised so that the base 11, the light guide part 62, the base part 72, and the receiving part 73 may be covered. In this case, the cover member is provided with a slit that exposes the front surface of the base portion 11 among the front surface of the pointer main body 10 and is retained in accordance with the abolition of the 22 peripheral wall portions covering the instruction portion 12. Part 71 will also be abolished.

  Further, in the present embodiment, the example has been described in which the pointer main body 10 includes the base portion 11 having the rotation center region R and the end portion 18 and the instruction unit 12 that instructs the measurement value display unit. The end portion 18 located on the rear end side of the rotation center region R may be covered with the front wall portion 21 so that only the rotation center region R and the indication portion 12 are exposed from the slit 21a, or the end The part 18 itself may be abolished.

  In addition, the said cover member which abolished the terminal part 18 itself, covered the back end side of the rotation center area | region R with the front wall part 21, and eliminated the peripheral wall part 22 location which covers the instruction | indication part 12 as a cover member 20 is employ | adopted. In this case, the cover member only needs to cover the rotation center region R, the light guide portion 62, and the pedestal portion 72 (at least the rotation center region R and the light guide portion 62). A slit for exposing the front surface of the rotation center region R out of the front surface of the pointer main body 10 is provided.

DESCRIPTION OF SYMBOLS 10 Pointer main body 11 Base part 12 Instruction part 18 Terminal part 20 Cover member 21a Slit 30 Base member 40 Balancer 50 Pointer drive means 51 Rotating shaft 60 Translucent member 61 Boss part 62 Light guide part 63 Light receiving part 64 Front light receiving part 65 Rear light receiving Part 66 Plate surface part 70 Shielding member 71 Holding part 72 Base part 75 Light quantity adjusting part R Rotation center area RA Rotation center axis Y Virtual center line

Claims (2)

A transparent pointer body having a rotation center region and an instruction unit for indicating a measurement value display unit;
A first light exit surface that emits illumination light in the direction of the indicator so that the indicator emits light, and a second light output that emits illumination light in the direction of the distal end so that the distal end of the pointer body emits light. And a pedestal member having a light guide portion to form a surface ,
In the non-translucent cover member that covers at least the rotation center region and the light guide unit, in the light emitting pointer provided with a slit that exposes at least the front surface of the rotation center region of the front surface of the pointer body,
Illumination introduced into the rotation center region by shielding at least a part of the gap between the two light exit surfaces so that the illumination balance between the rotation center region and the indicator is maintained on the pedestal member. A light emission indicator characterized in that a light amount adjustment unit for adjusting the amount of light is provided. A transparent pointer body having a rotation center region and an instruction unit for indicating a measurement value display unit;
A first light exit surface that emits illumination light in the direction of the indicator so that the indicator emits light, and a second light exit surface that emits illumination light to the end so that the distal end of the pointer body emits light And a pedestal member having a light guide portion to form ,
In the non-translucent cover member that covers at least the rotation center region and the light guide unit, in the light emitting pointer provided with a slit that exposes at least the front surface of the rotation center region of the front surface of the pointer body,
In the rotation center region, a bulge portion corresponding to the shape of the light guide portion is provided,
The bulging portion shields at least part of the light that illuminates directly above the gap between the two light exit surfaces so that the illumination balance between the rotation center region and the indication portion is maintained. A light emission indicator characterized in that a light amount adjusting unit for adjusting the amount of illumination light introduced into the rotation center region is provided.

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